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Croatian kunas to Polish zlotys exchange rate API

1 HRK = 0.5841 PLN · Live mid-market rate

Convert HRK to PLN at the mid-market exchange rate. Access real-time rates via our /api/rate endpoint (free API key required) or the developer docs.

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Mid-market rate
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Exchange Rate Trend

HRK → PLN
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HRK to PLN Conversion Table

Convert HRK to PLN

HRK PLN
kn1 zł0.58
kn5 zł2.92
kn10 zł5.84
kn25 zł14.60
kn50 zł29.20
kn100 zł58.41
kn500 zł292.04
kn1,000 zł584.08
kn5,000 zł2,920.40
kn10,000 zł5,840.79

Convert PLN to HRK

PLN HRK
zł1 kn1.7121
zł5 kn8.5605
zł10 kn17.121
zł25 kn42.8024
zł50 kn85.6049
zł100 kn171.2097
zł500 kn856.0486
zł1,000 kn1,712.0972
zł5,000 kn8,560.4858
zł10,000 kn17,120.9716

About the Croatian Kuna (HRK)

The Croatian Kuna (HRK) is the official currency used in international trade and commerce.

Key Factors That Influence HRK

  • Central bank monetary policy
  • Economic indicators
  • Trade balance
  • Political stability
  • Global market conditions

About the Polish Zloty (PLN)

The Polish Zloty (PLN) is managed by Narodowy Bank Polski. As one of the EU's largest economies outside the Eurozone, Poland's currency reflects its growing economic importance.

Key Factors That Influence PLN

  • NBP monetary policy
  • EU fund inflows
  • Export performance
  • Inflation targeting
  • Political and EU relations

Understanding the HRK/PLN Exchange Rate

The HRK/PLN exchange rate tells you how many Polish zlotys you get for 1 Croatian Kuna. This is the mid-market rate — the real exchange rate without any markup. It's the same rate used by Google Finance.

AllRatesToday provides this rate via a free REST API, updated every 60 seconds from institutional foreign exchange market data. Integrate live HRK/PLN rates into your app with our official SDKs for JavaScript, Python, PHP, and React.

The exchange rate between HRK and PLN fluctuates based on supply and demand in the foreign exchange market. Economic data releases, central bank announcements, and geopolitical events can all cause significant movements in the rate.

Currency converter API for HRK to PLN

The rate above comes from the AllRatesToday API. Each call below is one HTTP request that returns JSON for HRK/PLN.

The live rate needs a free API key, no card required. The ECB example below needs no key at all.

Get a free API key Already registered? Copy your key from the dashboard.

Live mid-market rate

The number shown on this page, refreshed every 60 seconds across 163 currencies. Use it for pricing, checkout and anything a customer sees.

curl "https://allratestoday.com/api/v1/rates?source=HRK&target=PLN" \
  -H "Authorization: Bearer art_live_your_key"

Response (live, when this page was generated):

[
  {
    "rate": 0.584079,
    "source": "HRK",
    "target": "PLN",
    "time": "2026-10-27T14:08:01+0000"
  }
]

Several targets in one call return one row per pair:

curl "https://allratestoday.com/api/v1/rates?source=HRK&target=PLN,EUR,GBP" \
  -H "Authorization: Bearer art_live_your_key"

Official central bank rate

The rate a named institution published for a date, from 122 central banks and 4 tax authorities. It never changes after publication, which is what tax filings, customs and audits require. 

curl "https://allratestoday.com/api/v1/central-bank/nbp/latest?source=HRK&target=PLN" \
  -H "Authorization: Bearer art_live_your_key"

Narodowy Bank Polski: live example responses · All 126 sources · Endpoint reference

Official SDKs

npm install @allratestoday/sdk · pip install allratestoday · composer require allratestoday/sdk

For AI agents

An MCP server — @allratestoday/mcp-server — lets Claude, Cursor and other MCP clients pull these rates directly, no glue code.

Free tier

No credit card, no trial expiry. Paid plans start at €4.99/month for 5,000 requests a month.

Which one do you need? If a regulator, tax authority or auditor names the source, use the official rate — the two can differ by several percent on the same day. For everything a customer sees, use the mid-market rate. On weekends and holidays the official endpoints return the most recent published date, which is the figure compliance rules expect you to apply.

Official HRK and PLN Central Bank Rates

The rate on this page is the live mid-market rate. For tax filings, customs valuations, audits, and compliant invoicing you often need the official reference rate published by the central bank instead. AllRatesToday also serves published central-bank rates as JSON, with history and a free latest-rates tier.

Narodowy Bank Polski official rates → All central banks →

How HRK/PLN Exchange Rates Work

Exchange rates are determined by supply and demand in the global foreign exchange (forex) market, the largest financial market in the world with over $6 trillion traded daily.

Floating vs Fixed Rates: Most major currencies like HRK and PLN have floating exchange rates, meaning their value is determined by market forces. Some currencies are pegged to another currency (usually USD) at a fixed rate.

Bid and Ask Prices: In forex markets, currencies are quoted with a bid price (what buyers pay) and ask price (what sellers receive). The mid-market rate shown on this page is the midpoint between these two prices.

Rate Fluctuations: The HRK/PLN rate can change every second during trading hours. Major economic announcements, interest rate decisions, and geopolitical events can cause significant moves in either direction.

Frequently Asked Questions About HRK/PLN

How do I convert HRK to PLN?

To convert HRK to PLN: (1) Use the calculator above to see the live mid-market rate. (2) For programmatic access, call our API: GET /api/v1/rates?source=HRK&target=PLN. Current rate: 1 HRK = 0.5841 PLN. Get your free API key at allratestoday.com/register.

What is 1 HRK in PLN today?

1 HRK equals 0.5841 PLN as of today. This is the mid-market exchange rate, which is the real rate without any bank markup. Rates fluctuate constantly based on market conditions, so check back regularly for updates.

Is the HRK going up or down against PLN today?

The HRK/PLN exchange rate fluctuates throughout the day based on market conditions. Today's rate is 1 HRK = 0.5841 PLN. Check our historical chart above to see the trend over the past day, week, month, or year to understand whether HRK is strengthening or weakening against PLN.

What is the best time to buy PLN with HRK?

The best time to exchange HRK to PLN depends on market conditions. Generally, rates tend to be more favorable during overlapping trading hours between major financial centers (London, New York, Tokyo). Avoid exchanging during weekends or bank holidays when spreads may be wider. Use our historical chart to identify trends and consider setting up rate alerts.

Why is HRK falling or rising against PLN?

Exchange rates between HRK and PLN are influenced by: interest rate differentials between central banks, inflation rates, GDP and economic growth data, trade balances, political stability, and global market sentiment. Major announcements from the Federal Reserve, ECB, or other central banks can cause significant short-term movements in the HRK/PLN rate.

How can I get HRK/PLN rates in my app?

Use the AllRatesToday API: (1) Register for a free API key at allratestoday.com/register. (2) Call GET /api/v1/rates?source=HRK&target=PLN with your Bearer token. (3) Rates update every 60 seconds from institutional foreign exchange market data. (4) Install our official SDK for JavaScript (npm), Python (PyPI), or PHP (Packagist) for even faster integration.

What is the mid-market rate for HRK/PLN?

The mid-market rate (also called the interbank rate) is the midpoint between buy and sell prices in global currency markets. The current mid-market rate is 1 HRK = 0.5841 PLN. This is the "real" exchange rate without any bank markup. AllRatesToday provides this rate via a free API, sourced from institutional foreign exchange market data.

Other HRK conversions

Building HRK/PLN into software?

These rates come from the AllRatesToday API. If you need them in an application rather than on a page, these are the places to start:

Packages and open data